23-year-old Kelly Gray was just hoping to defray some of the costs of her wedding when she decided to auction off a bridesmaid spot in her wedding on eBay. But she got far more than she bargained for.When the bidding closed at 7:27 p.m. on Wednesday, the winning bid was $5,700. The winner: “drpeppersnapple”.Gray and her fiance had planned to keep the wedding budget under $7,000 by using an iPod, instead of a DJ and baking their own wedding cake. Now they can plan for something a bit bigger.A representative for